Title :
Control of large magnetocaloric effects and hysteresis of La1-zCez(Fe0.86Si0.14)13 compounds
Author :
Fujieda, S. ; Fujita, A. ; Fukamichi, K.
Author_Institution :
Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan
Abstract :
In order to improve the magnetocaloric effects (MCEs), the partial substitution of Ce for La in the La(Fe0.86Si0.14)13 has been examined. The MCEs in the La0.7Ce0.3(F0.86Si0.14)13 are much larger than those in the La(Fe0.86Si0.14)13. The hysteresis loss due to the itinerant-electron metamagnetic transition of the La0.7Ce0.3(Fe0.86Si0.14)13 is smaller than that of La(Fe0.88Si0.12)13, though their MCEs are almost the same. Similar results are obtained in the case of z<0.3. Accordingly, La1-zCez(Fe0.86Si0.14)13 compounds are useful for high-performance magnetic refrigerants.
Keywords :
cerium compounds; iron compounds; lanthanum compounds; magnetic cooling; magnetic hysteresis; magnetic transitions; metamagnetism; La0.7Ce0.37(Fe0.86Si0.14)13; La1-zCez(Fe0.86Si0.14)13 compounds; itinerant-electron metamagnetic transition; large magnetocaloric effects; magnetic cooling; magnetic hysteresis; magnetic transitions; metamagnetism; Cooling; Entropy; Iron; Isothermal processes; Magnetic field measurement; Magnetic hysteresis; Refrigerants; Refrigerators; Superconducting magnets; Temperature dependence; Adiabatic temperature change; hysteresis loss; itinerant-electron metamagnetic transition; magnetic entropy change; magnetocaloric effects; relative cooling power;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854775
